diff --git a/firebase_admin/_messaging_encoder.py b/firebase_admin/_messaging_encoder.py
index d7f23328..11c0bbcd 100644
--- a/firebase_admin/_messaging_encoder.py
+++ b/firebase_admin/_messaging_encoder.py
@@ -529,6 +529,7 @@ def encode_apns(cls, apns):
                 'APNSConfig.headers', apns.headers),
             'payload': cls.encode_apns_payload(apns.payload),
             'fcm_options': cls.encode_apns_fcm_options(apns.fcm_options),
+            'live_activity_token': _Validators.check_string('APNSConfig.live_activity_token', apns.live_activity_token),
         }
         return cls.remove_null_values(result)
 
diff --git a/firebase_admin/_messaging_utils.py b/firebase_admin/_messaging_utils.py
index ae1f5cc5..f35a7097 100644
--- a/firebase_admin/_messaging_utils.py
+++ b/firebase_admin/_messaging_utils.py
@@ -332,6 +332,7 @@ class APNSConfig:
     Args:
         headers: A dictionary of headers (optional).
         payload: A ``messaging.APNSPayload`` to be included in the message (optional).
+        live_activity_token: A push to start live activity (optional).
         fcm_options: A ``messaging.APNSFCMOptions`` instance to be included in the message
             (optional).
 
@@ -339,9 +340,10 @@ class APNSConfig:
         /NetworkingInternet/Conceptual/RemoteNotificationsPG/CommunicatingwithAPNs.html
     """
 
-    def __init__(self, headers=None, payload=None, fcm_options=None):
+    def __init__(self, headers=None, payload=None, live_activity_token=None, fcm_options=None):
         self.headers = headers
         self.payload = payload
+        self.live_activity_token = live_activity_token
         self.fcm_options = fcm_options